NASA TLX Workload.
We planned to estimate TLX effort as a task load by combining all the ratings provided by a participant in five dimensions in the TLX metrics. However, most existing studies estimate subjective workload by combining all the ratings in six dimensions [1]}, [2]}, [3]}, [4]}, [5]}. Therefore, we also take ratings from each participant on six dimensions (mental demand, physical demand, temporal demand, effort, performance, and frustration). Finally, we estimate the cognitive workload (Fig. REF ). However, we consider a scale of ten with one step size [6]} to take ratings conveniently from participants for each dimension. It slightly sacrifices granularity in comparison to scale 100 with step size five. However, the results should not be affected much.
